Application of Prenatal Renal Ultrasound Diagnosis in Fetal Hydronephrosis Diagnosis
Objective To explore the clinical application of prenatal renal ultrasound in the early diagnosis and prognosis of fetal hydronephrosis.Methods A total of 35 cases of single fetus with hydronephrosis who came to the First Affiliated Hospital of Fuzhou,Fujian Medical University from January 2020 to December 2023 and underwent ultrasonic screening of fetal kidney were selected as clinical research objects.The results of ultrasonic examination of fetal kidney between 15 to 40 weeks of normal gestation were observed,and the relationship between the prognosis of fetus with hydronephrosis and the diameter of fetal collection system and the thickness of renal cortex were analyzed.Results A total of 35 cases of single fetus with hydronephrosis were screened by fetal kidney ultrasound,all of which were single kidneys and had different degrees of hydronephrosis,including 9 cases with pathological hydronephrosis and 26 cases with non-pathological hydronephrosis.In the non-pathological hydronephrosis,the renal calicae showed obvious dilation and the renal parenchyma was obviously thinning.The renal ultrasound results showed,34-37 gestational age and 38-40 gestational weeks of fetal size before and after the collection system of values,and renal cortical thickness were significantly higher than that of 15-28 gestational fetus,normal fetus can be detected in about 34 weeks gestation about 7 mm diameter before and after the collection system,the fetal renal cortical thickness of about 5 mm.In the 35 cases,22 cases of hydronephrosis disappeared within 3 months after birth.No hydronephrosis disappeared in the fetuses with anteroposteric diameter of the collecting system greater than 15 mm and the thickness of the renal cortex≤5 mm.The remaining 8 cases with the thickness of the renal cortex≤5 mm received surgery.Conclusion Prenatal ultrasound diagnosis can effectively determine the status of fetal hydronephrosis and has a good accuracy as a noninvasive detection in early clinical stage.However,for children with hydronephrosis after birth,the possibility of pathological obstruction should be vigilant,clinical follow-up should be paid attention to it,and surgical treatment should be performed if necessary.